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Living with Benign breast phyllodes tumor

A rare, usually painless breast tumor that starts in connective tissue and grows quickly.

Understanding Benign breast phyllodes tumor

Benign breast phyllodes tumor is a rare tumor that starts in the connective (stromal) tissue of the breast.

The name comes from the Greek word for leaf-like, which describes how it grows. These tumors are most common in women in their 30s and 40s, but any age can be affected. They are usually painless and tend to grow quickly but rarely spread outside the breast. Most are benign (not cancer).

Signs & symptoms

GARD doesn't list specific symptoms for this condition yet. It notes these tumors are usually painless and grow quickly.

  • Painless breast lump
  • Quick growth of the tumor

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include cancer specialists, maternal-fetal medicine specialists and women’s reproductive health specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Cancer specialists (oncologists); Maternal-fetal medicine specialists (pregnancy-related); Women’s reproductive health specialists (obstetricians / gynecologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with American Cancer Society and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
How can you tell whether my tumor is benign?
What are my options for treatment and follow-up?
Which specialist should manage my care?

Quick facts

Symptoms usually startAdult

GARD says the underlying cause is unknown.

Urinary and Reproductive

Also known as: benign phyllodes neoplasm of breast; benign phyllodes neoplasm of the breast; benign phyllodes tumor of breast; benign phyllodes tumor of the breast; benign phyllodes tumour of breast; benign phyllodes tumour of the breast

Patient organizations

Source: NIH GARD · Benign breast phyllodes tumorGARD ID 9514 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Benign breast phyllodes tumor.

Explore the Benign breast phyllodes tumor blog

Explore research for Benign breast phyllodes tumor

Explore actively recruiting Benign breast phyllodes tumor studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Benign breast phyllodes tumor with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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